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Oracle® Exalogic Elastic Cloud Multirack Cabling Guide
Release EL X2-2, X3-2, and X4-2

E18481-08
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1 Multirack Cabling Overview

This chapter describes the Exalogic Machine multirack cabling service.

It contains the following sections:

1.1 About the Multirack Cabling Service

The multirack cabling service allows you to extend the capability of the Exalogic rack systems to beyond just a single rack. The multirack cabling service allows you to cable up to eight Exalogic machine full racks together, without requiring any external InfiniBand switches.

It is assumed that all racks are adjacent to each other, in a side-by-side configuration. If racks are not side-by-side, then you may need to purchase longer cables for the extended connections. Placing the racks in any configuration other than side-by-side may require you to purchase additional 10–meter cables. Cable lengths across computer room aisles can vary from site to site, and may increase the difficulty of determining the cable lengths that you may need to purchase.

1.2 Multirack Cabling Scenarios

You can use the multirack cabling service to connect an Exalogic machine with one or more Exalogic machines, or with one or more Exadata Database Machines. This guide discusses in detail how to perform multirack cabling tasks in the following scenarios:

Appendix A contains network connectivity diagrams for one Exalogic machine connected to another Exalogic machine, and for the scenario where eight Exalogic full racks are connected.

Appendix B contains network connectivity diagrams for one Exalogic machine connected to one Exadata machine.

Any combination of up to eight racks of Exalogic machines or Exadata Database Machines can be connected together. If you need to connect a combination of more than eight Exalogic machine full racks or Exalogic Database Machine full racks, you will require additional switches, such as an M9-648 port modular switch. A detailed discussion of such scenarios is beyond the scope of this guide. For more information, please contact Oracle Support.

For detailed information about the hardware components of the Exalogic machine and the rack layout, see the Oracle Exalogic Elastic Cloud Machine Owner's Guide.

1.3 Port Usage in InfiniBand Switches

All configurations of the Exalogic machine (full, half, quarter, and eighth rack) include Sun Network QDR InfiniBand Gateway Switches. Only the Exalogic machine full rack and half rack configurations include a Sun Datacenter InfiniBand Switch 36.

This section discusses the port usage in the following InfiniBand switches in multirack configuration scenarios:

1.3.1 Port Usage in NM2-GW

Figure 1-1 illustrates the port usage in each of the Sun Network QDR InfiniBand Gateway Switches (NM2-GW).

Figure 1-1 Port Usage/Connection Groups for NM2-GW in Multirack Scenarios

Description of Figure 1-1 follows
Description of "Figure 1-1 Port Usage/Connection Groups for NM2-GW in Multirack Scenarios"

1.3.2 Port Usage in NM2-36P

illustrates the port usage in the Sun Datacenter InfiniBand Switch 36 (NM2-36P), which is included in Exalogic machine full rack and half rack configurations.

Figure 1-2 Port Usage/Connection Groups for NM2-36P in Multirack Scenarios

Description of Figure 1-2 follows
Description of "Figure 1-2 Port Usage/Connection Groups for NM2-36P in Multirack Scenarios"

1.4 Multirack Cabling Tasks

Before cabling an Exalogic machine rack for multiple rack operation, you must know the system configuration and obtain all the prerequisite information for system installation. It is assumed that all Exalogic machine racks have been properly installed and verified. If you are connecting an Exalogic machine to an Exadata Database Machine, ensure that both Exalogic machine and Exadata Database Machine are installed and verified.

Procedures in this guide assume that the racks are next to each other.

Before you begin installing an Exalogic machine, perform pre–installation planning. Complete the checklists in the Oracle Exalogic Elastic Cloud Machine Owner's Guide. Verify the site space, access route, power, grounding, air flow, and network requirements that are provided in the Oracle Exalogic Elastic Cloud Machine Owner's Guide.

Install Exalogic machine racks if the cabling service is performed as part of an initial installation. To install an Exalogic machine, follow the instructions in the Oracle Exalogic Elastic Cloud Machine Owner's Guide. Ensure that you read the entire guide before beginning installation, and follow all safety precautions.

Perform the following multirack cabling tasks, in order, after completing the installation process.